**Solution:** The equations of motion of the collar give

**−mg + N cosθ = 0** (i)

**N sinθ = ma** (ii)

where m is the mass, N is the reaction force from the slide and **θ** = 30^{◦}.

Eliminating N from Eqs. (i) and (ii) yields

a = g tan**θ **= 9.81/ p√3

a = 5.66 m/s^{2}